Overview
The L6385E is a high voltage high and low-side driver manufactured by STMicroelectronics using BCD™ “offline” technology. This device is designed to drive a half-bridge of power MOSFET or IGBT devices, making it suitable for a wide range of high-voltage applications. The L6385E features a compact design and is available in DIP-8 and SO-8 packages, as well as tape and reel options. It integrates a bootstrap diode, reducing the need for external components and enhancing reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VOUT) | -3 to VBOOT - 18 V | V |
| Supply Voltage (VCC) | -0.3 to +18 V | V |
| Floating Supply Voltage (VBOOT) | -1 to 618 V | V |
| High-Side Gate Output Voltage (Vhvg) | -1 to VBOOT V | V |
| Low-Side Gate Output Voltage (Vlvg) | -0.3 to VCC + 0.3 V | V |
| Logic Input Voltage (Vi) | -0.3 to VCC + 0.3 V | V |
| Driver Current Capability (Source/Sink) | 400 mA / 650 mA | mA |
| Switching Times (Rise/Fall) | 50/30 nsec with 1 nF load | nsec |
| Junction Temperature (Tj) | -45 to 125 °C | °C |
| Thermal Resistance Junction to Ambient (Rth(JA)) | 150 °C/W (SO-8), 100 °C/W (DIP-8) | °C/W |
Key Features
- High voltage rail up to 600 V
- dV/dt immunity ± 50 V/nsec in full temperature range
- CMOS/TTL Schmitt trigger inputs with hysteresis and pull-down
- Undervoltage lockout on lower and upper driving sections
- Internal bootstrap diode
- Outputs in phase with inputs
- Compact design available in DIP-8 and SO-8 packages, as well as tape and reel options
Applications
- Home appliances
- Induction heating
- HVAC
- Motor drivers – SR motors, DC, AC, PMDC, and PMAC motors
- Asymmetrical half-bridge topologies
- Industrial applications and drives
- Lighting applications
- Factory automation
- Power supply systems
Q & A
- What is the maximum high-side gate output voltage of the L6385E?
The maximum high-side gate output voltage (Vhvg) is up to VBOOT V.
- What are the typical switching times for the L6385E with a 1 nF load?
The typical switching times are 50 nsec for rise time and 30 nsec for fall time with a 1 nF load.
- What is the purpose of the internal bootstrap diode in the L6385E?
The internal bootstrap diode eliminates the need for an external fast recovery diode, reducing leakage current and enhancing reliability.
- What are the package options available for the L6385E?
The L6385E is available in DIP-8 and SO-8 packages, as well as tape and reel options.
- What is the thermal resistance junction to ambient for the SO-8 package?
The thermal resistance junction to ambient (Rth(JA)) for the SO-8 package is 150 °C/W.
- What is the maximum junction temperature for the L6385E?
The maximum junction temperature (Tj) is 150 °C.
- What type of logic inputs does the L6385E have?
The L6385E has CMOS/TTL Schmitt trigger inputs with hysteresis and pull-down.
- What is the driver current capability of the L6385E?
The driver current capability is 400 mA source and 650 mA sink.
- What are some common applications of the L6385E?
Common applications include home appliances, induction heating, HVAC, motor drivers, and power supply systems.
- Does the L6385E have undervoltage lockout protection?
Yes, the L6385E features undervoltage lockout on both lower and upper driving sections (VCC and VBOOT).
